Insulator



FIG. 1 is a perspective view of an insulator, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a side elevation view thereof; and,

FIG. 7 is an opposite side elevation view thereof.

The broken lines shown in FIGS. 1-7 illustrate portions of the insulatorthat form no part of the claimed design.

The wire frame lines shown throughout the views are intended to indicatesurface contour.

CLAIM The ornamental design for an insulator, as shown and described.